Sand-trap.



C. N. ALLERDING.

SAND TRAP.

APPLICATION FILED MAR. 2. 1914.

Patented Aug. 17, 1915.

.systems wherein the sand is fed CLETUS N. ALLERDING, 0F MANSFIELD,OHIO,

FFTQE,

ASSIGNOR TO THE OHIO BRASS COM- SAND-TRAP.

Specification of Letters Patent.

Patented Aug. 17, 1915.

Application filed March 2, 1914. Serial No. 821,871.

One of the objects of my invention is to provide an improved device ofthis character which will be simple, durable, and reliable inconstruction and effective and efii.

cient in operation.

Other objects of my invention will appear hereinafter.

Referring to the drawings: Figure l is a sectional view on the line 11of Fig. 2 of a structure embodying my invention and showing a sandhopper or supply magazine associated therewith. Fig. 2 is a top planview of my improved device, and Fig. 3 is an enlarged detail sectionalview on theline 33 of Fig. 1.

My improved structure is intended for use in connection with thesocalled air sanding into a trap and blown by air passing therethroughdown into close proximity to the rails and wheels.

In the structure shown A represents any desired support, such as thefloor of the car, and B the hopper or magazine in which the supply ofsand is placed. The trap represented generally by tioned in anydesirable location either above or below the floor of the car. 111 thestructure shown the hopper B is positioned above the fioor of the carand the sand trap se The cured to the under side of the floor. sides ofthe hopper B are slanted or inclined so that the sand will settle downinto the trap through an opening in the car floor with which said hoppersides register. The sand trap O is preferably made of a single castingof metal having a flat top or top plate 1 with notches 2 in its sideedges for the reception of bolts by which to removably fasten the trapin position so that it will be suspended from the floor of the car.

An annular integral tapered flange 3 rises from the surface of the topplate 1 and fits the opening in the floor of the car beneath atsubstantially right angles to the C may be posi-i the hopper. Thisflange and the passage which it forms serves to constitute the sandentrance to the trap. The two side walls 1 of the trap are preferablyvertical and parallel and spaced apart. The end wall 5 continues down ashort distance almost vertically and in line with the flange 3'and itthen makes a turn and assumes a position to form an almost flat inclinedportion 6 so that the sand may properly feed down. This inclined wallportion has a comparatively large circular threaded opening which isclosed by a removable screw plug 7 so that access may be had to the trapat this point for the purpose of clearing it of any caked or frozensand,or for any other purpose for which access to the interior of thetrap is necessary. This plug has a squared head or end 8 for conveniencein removing or replacing. The end wall may then be said to take anupwardly inclined position face of the inclined portion 6 so as to forma baffle wall 9 the function of which will be hereinafter explained.From this bai'lie portion the wall is made substantially vertical andthe trap at this lower portion is preferably given a circular sectionalconstruction which forms serving as a discharge outlet for the trap. Theinterior ll of this passage at its lower end is enlarged in diameter andthe walls are provided with outstanding and instanding lugs orprojections 12, or with any other suitable means for fastening the hoseor pipe thereto. This hose or pipe (not shown) is extended down to apoint adjacent the rails and wheels and conveys the sand thereto.

In the upper portion of the trap is a wall or partition 13 which beginssubstantially flush with the flange 3 and inclines diagonally downwardlytoward the face of the inclined wall portion 6, and its lower endportion 14 is'slightly curved, as shown more clearly in 1. Thispartition 13, together with the side walls 4; and the end wall portions5 and 6 of this structure, form a gradual downwardly narrowing passagefor the sand, and the end or lower edge portion 14 ofsaid partitionterminates comparatively close to the face of the inclined wall portionI 6 so as to leave a rather restricted passage or opening for the sandand prevent floodmg or excessive feed thereof. The opposite end wall 15of the trap structure or casting a substantially vertical passage 10' isfiat and disposed substantially vertically, except at its lower endportion 16 which, as shown clearly in Fig. 1, curves around intoconnection with the bottom wall 17 In the lower rounded corner portionof the structure, where the end wall 15 and bottom wall 1? merge, thereis provided an opening 18 for the reception of the threaded end of anair inlet pipe 19. This pipe leads from any suitable source of airsupply under pressure and the supply of air may bev controlled by valvesor any other desirable means not shown. I prefer to bring the air pipeinto the structure at this point because, for obvious mechanicalreasons, it is desired, when installing the device, to make theconnection here rather than in the side or end walls. Furthermore, bysuch arrangement in conjunction with the downwardly disposed baille wallor partition 20, depending from the top plate 1 of the structure, I amenabled to intercept any moisture which may come in with the air and wetthe sand. The depending partition 20, in conjunction with the end wall15 and side walls 4 of the structure, form a chamber 21, and the aircoming from the end of the pipe 19 blows directly upward into thischamber. By reason of the relative disposition of the pipe 19 and thewalls and bafile wall 20 the air passes upwardly along the wall 15 intothe chamber 21, and in order to leave the chamber 21 it must passdownwardly adjacent the baffle wall 20 and around the lower edge of saidba'liie wall.

It will thus be seen that the air coming into the device undercomparatively high pressure and impinging directly against the walls ofsaid chamber, and particularly the bafile plate or wall 20, will depositon said baffle wall whatever moisture is in the air, and as thismoisture accumulates on the baffle wall 20 it will drain down by gravityand drip from the lower edge thereof, and in order to relieve the deviceof this excess water and moisture I provide a drip opening 22 in thebottom wall 17 substantially below the edge of baffle plate 20. Thisopening 22 preferably remains open at all times and will drain the waterfrom the device. The curved corner portion 16 also serves to direct anywater which accumulates on and drains from the end wall 15, to the drainhole 22. As the air leaves the inlet pipe and enters the chamber 21,which is larger than the pipe it expands to some extent and its pressuredecreases, and in order now to direct the air into proper and effectiverelation to the sand, I provide an other partition D of peculiarformation. One portion 23 of this partition wall is disposed verticallyand separates the discharge passage or chamber 10 from the air inletchamber. This partition continues upward therefrom and is given a curvedarch-like formation. This arch-like portion of said partition isdisposed adjacent the battle wall 20, the top plate 3 and the partitionwall 13 so as to form a comparatively narrow restricted passage 24: forthe air. The archlike portion of the partition wall D terminates at 25close to and a little below the bai'l'le wall 13 and its lower end letforms a nozzle, so to speak, through which the air emits.

Since the partition 13 and the arch portion of the wall D aresubstantially parallel the opening 26 of the nozzle is long and narrowand the eifect, therefore, is to direct a thin sheet, so to speak, ofair against the exposed surface of the sand at this point.

In consequence the sand will be bodily blown uniformly from the exposedportion of the supply and carried by the air against the baflie wall 9,which, as is seen in Fig. 1, is disposed adjacent to the end 25 of thearchlike wall and forms therewith a narrow elongated passagecommunicating with the general discharge passage 10. The sandladen air,after leaving this narrow passage, 1s directed to some extent upwardlyand into the upper portion of the passage or chamber 10.

It will be noted that the chambers and passages of the device aresomewhat larger than the air inlet pipe and that the air after leavingthe inlet pipe expands to some extent and its pressure and velocitydecreases. These parts are so proportioned that the air upon reachingthe nozzle 26 will have such pressure and speed as to properly blow thesand from the supply, but the force of the sand-laden air, after leavingthe supply of sand, will not be suilicient to exert a sandblast actionupon the surfaces of the baflie 9 and the arch partition above saidbaflie. Thus these surfaces will not be eaten or worn away. In fact,when the sand-laden air enters the upper portion of the large passage orchamber 10, the pressure and speed of the air will be practically spent,and since the passage 10 'is disposed vertically the sand will fall orsettle down therethrough by gravity.

If, for any reason, the discharge passage 10 or any of the parts fromthereon should become clogged in any manner the air would be likely toblow back through the body of sand in the chamber and fly about in thecar, and to prevent any such disagreeable oocurrence I provide a reliefmeans in the chamber 10. In the structure shown I pro- 9 come clogged upto the said opening, the excess sand will also escape through saidopening. In order, however, to prevent the air and sand from passingthrough this opening 27 during the normal operation of the device, Iprovide a short batlle wall 28 over this opening, as shown more clearlyin Figs. 1 and 3. This baflle Wall 28 guards the opening 27 and the sandand air pass on downward instead of through the open ing 2'7.

It will be obvious to those skilled in the art, after having obtained anunderstanding of my invention from the disclosures herein made, that thestructure shown and described may be considerably modified Withoutvdeparting from the principles or the scope of my invention and I Wish itto be so understood.

What I claim is:

1. In a device of the class described, the combination of a casingforming a chamber having a discharge outlet, a sand-feeding chamberhaving communication with said outlet for exposing a portion of the sandadjacent the outlet, means restricting the flow of the sand, and meansfor directing a stream of air against the surface of the exposed portionof the sand to blowthe sur face sand away from the exposed portion.

2. In a device of the class described, the combination of a casingforming a chamber having a discharge outlet, a sand-feeding chamberhaving communication with said outlet, means restricting the flow of thesand, means for directing a stream of air against the exposed portion ofthe sand, and a battle for diverting the sand-laden air to- Ward theupper portion of said outlet in the direction from which the air comes.

3. In a sand trap of the class described, the combination of a casinghaving a discharge chamber and an outlet therefor, means for reversingand directing a current of air into the upper portion of said chamber,and means forming a sand-holding chamber having a portion exposed to thecurrent of air.

4:. In a sand trap of the class described, the combination of a casinghaving a discharge chamber and an outlet therefor, means for directing acurrent of air into the upper portion of said chamber, means for forminga sand-holding chamber having an opening exposed to the current of air,means forming an air chamber in said casing, and a baffie thereinagainst which the current of air impinges for collecting the moisturefrom the air.

5. The combination of a casing having a sand inlet and a dischargechamber having an outlet, means forming a sand chamber having an openingthrough which the sand feeds, means for directing the current of airagainst the sand exposed at said opening, and a bafiie for diverting andreversing a current of sand-laden air from the opening into the upperportion of said discharge chamber.

6. The combination or a casing having a sand inlet and a dischargechamber having an outlet, means forming a sand chamber having an openingthrough which the sand feeds, means for directing the current of airagainst the sand exposed at said opening, a bafiie for diverting acurrent of sand-laden air into the upper portion of said dischargechamber, and a relief vent in the Wall of said discharge chamber.

7. In a sand trap of the class described, the combinationof a casinghaving a sandholding chamber, a discharge chamber having an outlet, saidsand chamber having an opening at its lower end through which the sandis exposed to the discharge chamber, means forming a nozzle fordirecting a current of air against the surface of the exposed sand atsaid opening for blowing the surface sand out of the opening, and meansfor directing and diverting the sand-laden air from the opening intosaid discharge chamber.

8. In a device of the class described, the combination of a casinghaving a sand-holding chamber, said chamber having an opening throughwhich the sand is exposed, and a partition in said casing dividing saidcasing into an air chamber and a discharge chamber, and having a portionthereof disposed adjacent one wall of said sand chamber and adjacentsaid opening to form a nozzle for directing the air against the exposedsand, abaflie wall forming a discharge from said nozzle to saiddischarge chamber and against which the sandladen air is impinged.

9. In a device of the class described, the combination of a casinghaving a sandholding chamber, said chamber having an opening throughwhich the sand is exposed, a partition in said casing dividing saidcasing into an air chamber and a discharge chamber, and having a portionthereof disposed adjacent one wall of said sand chamber and adjacentsaid opening to form a nozzle for directing the air against the exposedsand, a baffle Wall forming a discharge from said nozzle to saiddischarge chamber and against which the sandladen air is impinged, anair inlet for said air chamber, and means in said air chamber forcollecting the moisture from the incoming air.

10. In a device of the class described, the combination with a casinghaving a sand chamber and sand discharging means, and having an airchamber, an air inlet for said chamber, and means in said chamber forcollooting the moisture from the incoming air.

11. In a device of the class described, the combination with a casinghaving a sand chamber and sand discharging means, and having an airchamber, an air inlet for sald chamber, a bafiie in said air chamberagainst which the incoming air impinges for eX-- tracting the moisturetherefrom, and means for draining the moisture from said air chamber asit drips from said baffle.

12. The combination of a sand trap havi ing a discharge chamber intowhich the sand laden air is blown, said discharge chamber having a mainoutlet and an auxiliary relief opening for relieving the pressure whenthe flow of sand from said outlet becomes clogged.

18. In a device of the class described, the

combination of a casing having a sand holding chamber with acommunicating feed chamber open to discharge, and means for directing astream of air against the surface ofthe sand in the feeding chamber tocarry the sand in a direction reverse to the initial direction ofmovement of the air in the feed chamber.

14. In a device of the class described, the

combination with a containing casing hav- -ing a gravity feeding chamberwith a latin a reverse direction out of the opening and parallel withthe direction of the incoming am In testimony whereof I have signed myname to this specification, in the presence of two subscribingwitnesses, on this 25 day of February A. D. 1914.

OLETUS N. ALLERDING.

Witnesses: I JOHN L. YOUNG, C. C. BECK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. C.

